Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan (Details)

v3.6.0.2
Employee Benefit Plan (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Days
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Defined Benefit Plan Disclosure [Line Items]      
Defined Contribution Plan Minimum Hours of Service 1,000    
Defined contribution plan, minimum employee contribution of annual compensation 2.00%    
Defined contribution plan, percentage at which employees vest annually in employer contributions 20.00%    
Defined Contribution Plan Minimum Years of Service Before Vesting Of Employer Contributions 2 years    
Defined Benefit Plan, Contributions by Employer | $ $ 1,056 $ 1,178 $ 895
Defined contribution plan, maximum employee contribution matched by employer 6.00%    
Defined contribution plan, maximum employee contribution of annual compensation 80.00%    
Defined contribution plan, employer match percentage 25.00%    
Defined contribution plan, minimum age requirement 21    
Defined Contribution Plan minimum number of days of employee service required | Days 90